patch-2.1.75 linux/include/linux/blkdev.h

• Lines: 16
• Date: Sun Dec 21 17:58:36 1997
• Orig file: v2.1.74/linux/include/linux/blkdev.h
• Orig date: Fri Dec 19 15:53:04 1997

diff -u --recursive --new-file v2.1.74/linux/include/linux/blkdev.h linux/include/linux/blkdev.h
@@ -72,4 +72,15 @@
 
 extern int * max_sectors[MAX_BLKDEV];
 
+#define MAX_SECTORS 244 /* 254 ? */
+
+#define PageAlignSize(size) (((size) + PAGE_SIZE -1) & PAGE_MASK)
+#if 0  /* small readahead */
+#define MAX_READAHEAD PageAlignSize(4096*7)
+#define MIN_READAHEAD PageAlignSize(4096*2)
+#else /* large readahead */
+#define MAX_READAHEAD PageAlignSize(4096*18)
+#define MIN_READAHEAD PageAlignSize(4096*3)
+#endif
+
 #endif